Inking mechanism for printing-machines.



R. HOE.

INKlNG MECHANISM FOR PRINTING MACHINES.

APPLICATION FILED OCT- 22,1914.

' Patented Sept. 12,1916.

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INKING MECHANISM FOR PRINTING-MACHINES.

Specification of Letters Patent.

Patented Sept. 12, 1916.

Application filed October 22, 1914. Serial No. 867,932.

' To all whom it may concern Be it known that I, ROBERT Hon, a citizenof the United States, residing at Battle Creek, county of Calhoun, andState of Michigan, have invented certain new and useful Improvements inInkmg Mechanism for Printing-Machines, fully described and representedin the following specification and the accompanying drawings, forming apart of the same.

This invention relates particularly to inking mechanism for printlngmachines, the especial object being to provide suitable devices forretarding the speed of rotation of an ink carrying roll for contact witha fountain roll or other ink supply and accelerating such speed fortransfer of the ink to an ink receiving roll. The mechanism, however,may be applied to other uses than varying the speed of an ink carryingroll, and the invention, broadly considered, includes such uses.

The apparatus of the present invention employs a rotating carrier onw'hlch are mounted one or more ink carrying or ductor rolls, which, bythe rotary movement of the carrier, are first brought into contact witha fountain roll and then with an ink receiving roll from which the inkis distributed by suitable devices. A curved ink distributing plate maybe used between the fountain roll and ink receiving roll, with which theink carrying rolls contact for better distribution of the ink, althoughthis is not essential. Between the ink receiving roll and the fountainroll means are provided for retarding the speed of rotation of the inkcarrying rolls, so that they engage the fountain roll at a comparativelylow speed, such as to,

properly take the ink from the fountain roll, and between the fountainroll and ink receiving roll the speed of the ink carrying rolls isaccelerated by engagement of the rolls with the ink distributing plateabove referred to, -or other member engaging the rolls, so as to .bringthe speed of the ink carrying rolls up to the desired-high speed of theink receiving roll for engagement with and transfer of ink to thelatter.

For a full understanding of the invention a detailed description of aconstruction embodying all the features of the same in their preferredform will now be given in connection with the accompanying drawings, andthe features forming the invention then specifically pointed out in theclaims.

struction. Fig. 3 is a detail section looking to the right on line 3 ofFig. 2.

Referring to said drawings, the general arrangement of the inkingmechanism is substantially that of United States Letters Patent to CoxNo. 441,790, dated December 2nd, 1890, A being the rotating carrier in.

which are mounted four ink carrying rolls B, which first take ink fromfountain roll C in ink fountain D, then pass over ink distributing plateE, and then make contact with ink receiving roll F to transfer inkthereto, the ink being delivered from ink receiving roll F in anysuitable manner, a distributing cylinder G with transfer roll H,vibrating rolls I, type cylinder K, and form rolls L, being shown, as isusual in modern high speed printing presses.

Referring now to the parts shown, especially embodying the presentinvention, each of the rolls B is mounted in yielding bearings, thebearings 10 at opposite ends of the rolls being shown as fixed to stemsmoving in boxes 11 and spring pressed outward by springs 12, so that therolls may be moved inward against the spring pressure. The shaft of eachof the rolls B carries at each end two disks, one 13, fixed to theshaft, and the other 14 loose thereon. The loose disks H engageabutments 15, preferably in the form of curved shoes, as shown,mountedat opposite ends of the rolls between the ink receiving roll Fand the fountain roll C, these shoes preferably being spring pressedinward for yielding pressure on the rolls B, as shown, the shoes beingpivotally mounted on stems 16 moving in boxes 17, and spring pressed bysprings 18. Each of the rolls is provided with brake shoes 19 mounted atopposite ends on the carrier A and preferably adjustable as shown, andheld in adjusted position by set screw 1, these brake shoes engagingdisks 13 on the rolls, when the rolls are pressed inward by engagementof disks 14 with shoes 15.

The operation of the construction is as follows: The carrier A isrotated continuously, and, the fountainroll is either caused to rotateby contact with the rolls B, or may be rotated intermittently orcontinuously,

- andbyany suitable means, as common with fountain rolls. The rolls Bare rotating at high speed when they leave roll F, and are retarded forengagement with the fountain roll C by disks 14 running over shoes 15which press the rolls inward sufliciently to bring the disks 13 fixed onthe roll shafts into braking contact with brake shoes 19. The springs 18supporting shoes 15 are stronger than roll springs 12, and areadjustable to give the desired yielding brake pressure. The rolls B arethus retarded tothe speed desired for engagement with the fountain rollC and, after leaving shoes 15 so as to be moved outward by springs 12,

engage and take ink from the surface of supply roll C, and then engagethe inner surface of the plate or shoe E, so-that, by the rotation ofthe carrier A with the rolls B in contact with plate or shoe E, therolls B are speeded up again to substantially the speed of roll F, orsuch speed as is desired, for transfer of ink to the ink receiving rollF. While the plate or shoe E is shown as engaging the ink receivingsurface of the rolls B, and extending throughout their length, so as toform an ink distributing surface, it will be understood that this is notessential to the speed controlling mechanism, but the shoe may engageany portion of the rolls B, such as the disks 13 or other disks fixed onthe roll shaft, for speeding up the roll, either with or Without the inkdistributing plate E.

lVhat I claim is: r

1. In an inking mechanism for printing machines, the combination with anink supply roll and an ink receiving roll, of a rotating carrier, one ormore ink carrying rolls mounted on the carrier and free to rotatethereon for transfer of ink from the ink supply roll to the inkreceiving roll, means for retarding the rotation of the ink carryingrolls for taking ink from the ink supply roll, and means foraccelerating the rotation tion during the movement of the carrier fromthe ink receiving roll to the ink supply roll, and an abutment engagingthe rolls to accelerate the rotation of the latter during the movementof the carrier from the ink supply roll to the ink receiving roll.

3. In an inking mechanism for printing machines, the combination with anink supply roll and an ink receiving roll, of a rotatmg carrier, one ormore ink carrying rolls mounted on the carrier and free to rotatethereon, said ink carrying rolls making ink transfer contact with theink supply and ink receiving rolls, braking devices on the carrier forretarding the rotation of the ink carrying. rolls, and an inkdistributing plate engaged by the ink carrying rolls during the movementof the carrier from the ink supply roll to the ink receiving roll andacting to 1Tccelerate the rotation of the ink carrying r0 5;

4. The combination with a rotating carrier having one ormore rollsmounted to rotate in yielding bearings thereon, of fixed and loose diskson the roll shafts, brake shoes carried by the carrier and engaging thefixed disks, and a shoe engaging the loose disks to press the rollsinward and apply braking pressure during the rotation of the carrier.

5. The combination with a rotating carrier having one or more rollsmounted to rotate in yielding bearings, thereon, of fixed and loosedisks on the roll shafts, brake shoes carried by the carrier andengaging the fixed disks, :1 shoe engaging the loose disks to press therolls inward and apply braking pressure during a portion of the rotationof the carrier, and a shoe engaging the rolls to accelerate theirrotation after the brake pressure is relieved by passing the brakeapplying shoe.

6. The combination with roll C and higher speed roll F, of rotatingcarrier A having one or -more rolls B mounted in yielding hearings onthe carrier and engaging successively rolls C, F, brake shoes 19 on thecarrier, shoes 15 engaging the rolls to press them into contact withshoes 19 and apnly braking pressure to retard the rolls for engagementwith roll C, and a shoecngaging the rolls after leaving the roll C toaccelerate their rotation for engagement with roll F.

In testimony whereof, I have hereunto set my hand, in the presence oftwo subscribing witnesses.

ROBERT HOE.

Witnesses:

A. WHITE, C. J. Sawxnn.

